/**
 * Created by cxdl on 2016/10/3.
 */
import java.applet.*;
import java.awt.Graphics;           //import the java pack used to draw graphics.

public class GUI extends Applet{
    public void paint(Graphics g){          //use this method to draw graphics.
    for(int i=0;i<12;i++){
        g.drawOval(10+10*i,10+10*i,240-20*i,240-20*i);
    }
}
}
